# 1978 ABN World Tennis Tournament – Singles

Dick Stockton was the defending champion of the singles event at the ABN World Tennis Tournament, but lost in the quarterfinals to first-seeded Jimmy Connors who won the title after a victory in the final against fourth-seeded Raúl Ramírez 7–5, 7–5.

## Seeds

* Jimmy Connors (champion)
* Björn Borg (quarterfinals)
* Vitas Gerulaitis (semifinals)
* Raúl Ramírez (final)
* Sandy Mayer (second round)
* Dick Stockton (quarterfinals)
* Ilie Năstase (semifinals)
* Wojtek Fibak (first round)

## Draw
### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Jimmy Connors | 4 | 6 | 6 | | | | |
| 3 | Vitas Gerulaitis | 6 | 4 | 4 | | | | |
| 3 | Vitas Gerulaitis | 6 | 4 | 4 | 1 | Jimmy Connors | 7 | 7 |
| | | | | | 4 | Raúl Ramírez | 5 | 5 |
| 4 | Raúl Ramírez | 7 | 6 | | 4 | Raúl Ramírez | 5 | 5 |
| 7 | Ilie Năstase | 5 | 3 | | | | | |

### Upper half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | Jimmy Connors | 6 | 6 | | | | | | | | | | | | | | | | | |
| | Dick Crealy | 1 | 3 | | | | | | | | | | | | | | | | | |
| | Dick Crealy | 1 | 3 | | 1 | Jimmy Connors | 6 | 6 | | | | | | | | | | | | |
| | | | | | | Kjell Johansson | 3 | 1 | | | | | | | | | | | | |
| | Ove Nils Bengtson | 7 | 6 | 1 | | Kjell Johansson | 3 | 1 | | | | | | | | | | | | |
| | Kjell Johansson | 6 | 7 | 6 | | | | | | | | | | | | | | | | |
| | Kjell Johansson | 6 | 7 | 6 | | | | | | 1 | Jimmy Connors | 3 | 6 | 6 | | | | | | |
| | | | | | | | | | | 4 | Dick Stockton | 6 | 4 | 0 | | | | | | |
| | Fred McNair | 3 | 4 | | | | | | | | | | | | 4 | Dick Stockton | 6 | 4 | 0 | | | | | | |
| | John Lloyd | 6 | 6 | | | | | | | | | | | | | | | | | |
| | John Lloyd | 6 | 6 | | | John Lloyd | 0 | 3 | | | | | | | | | | | | |
| | | | | | 4 | Dick Stockton | 6 | 6 | | | | | | | | | | | | |
| | Bill Scanlon | 3 | 1 | | 4 | Dick Stockton | 6 | 6 | | | | | | | | | | | | |
| 6 | Dick Stockton | 6 | 6 | | | | | | | | | | | | | | | | | |
| 6 | Dick Stockton | 6 | 6 | | | | | | | | | | | | | 1 | Jimmy Connors | 4 | 6 | 6 |
| | | | | | | | | | | | | | | | | 3 | Vitas Gerulaitis | 6 | 4 | 4 |
| 3 | Vitas Gerulaitis | 6 | 6 | | | | | | | | | | | | | | | | | | 3 | Vitas Gerulaitis | 6 | 4 | 4 |
| | Stan Smith | 2 | 4 | | | | | | | | | | | | | | | | | |
| | Stan Smith | 2 | 4 | | 3 | Vitas Gerulaitis | 6 | 6 | | | | | | | | | | | | |
| | | | | | | Jaime Fillol | 0 | 1 | | | | | | | | | | | | |
| | Chris Lewis | 5 | 6 | 6 | | Jaime Fillol | 0 | 1 | | | | | | | | | | | | |
| | Jaime Fillol | 7 | 0 | 7 | | | | | | | | | | | | | | | | |
| | Jaime Fillol | 7 | 0 | 7 | | | | | | 3 | Vitas Gerulaitis | 6 | 6 | | | | | | | |
| | | | | | | | | | | | Robert Lutz | 2 | 3 | | | | | | | |
| | Ken Rosewall | 6$^3$ | 2 | | | | | | | | | | | | | Robert Lutz | 2 | 3 | | | | | | | |
| | Vladimír Zedník | 7 | 6 | | | | | | | | | | | | | | | | | |
| | Vladimír Zedník | 7 | 6 | | | Vladimír Zedník | 3 | 6 | 4 | | | | | | | | | | | |
| | | | | | | Robert Lutz | 6 | 3 | 6 | | | | | | | | | | | |
| | Robert Lutz | 6 | 6 | | | Robert Lutz | 6 | 3 | 6 | | | | | | | | | | | |
| 8 | Wojtek Fibak | 4 | 2 | | | | | | | | | | | | | | | | | |

### Lower half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | Sandy Mayer | 6 | 7 | 6 | | | | | | | | | | | | | |
| | Tom Leonard | 7 | 6 | 2 | | | | | | | | | | | | | |
| | Tom Leonard | 7 | 6 | 2 | 5 | Sandy Mayer | 3 | 3 | | | | | | | | | |
| | | | | | | Kim Warwick | 6 | 6 | | | | | | | | | |
| | Raymond Moore | 6 | 7 | 3 | | Kim Warwick | 6 | 6 | | | | | | | | | |
| | Kim Warwick | 7 | 6 | 6 | | | | | | | | | | | | | |
| | Kim Warwick | 7 | 6 | 6 | | | | | | Kim Warwick | 2 | 2 | | | | | |
| | | | | | | | | | 4 | Raúl Ramírez | 6 | 6 | | | | | |
| | Vijay Amritraj | 6 | 6 | | | | | | | | | | 4 | Raúl Ramírez | 6 | 6 | | | | | |
| | Tom Okker | 2 | 3 | | | | | | | | | | | | | | |
| | Tom Okker | 2 | 3 | | | Vijay Amritraj | 2 | 2 | | | | | | | | | |
| | | | | | 4 | Raúl Ramírez | 6 | 6 | | | | | | | | | |
| | Tomáš Šmíd | 2 | 6$^6$ | | 4 | Raúl Ramírez | 6 | 6 | | | | | | | | | |
| 4 | Raúl Ramírez | 6 | 7 | | | | | | | | | | | | | | |
| 4 | Raúl Ramírez | 6 | 7 | | | | | | | | | | | 4 | Raúl Ramírez | 7 | 6 |
| | | | | | | | | | | | | | | 7 | Ilie Năstase | 5 | 3 |
| 7 | Ilie Năstase | 6 | 6 | | | | | | | | | | | | | | | 7 | Ilie Năstase | 5 | 3 |
| | Sherwood Stewart | 1 | 1 | | | | | | | | | | | | | | |
| | Sherwood Stewart | 1 | 1 | | 7 | Ilie Năstase | 6 | 6 | | | | | | | | | |
| | | | | | | Mike Fishbach | 3 | 1 | | | | | | | | | |
| | Terry Moor | 5 | 5 | | | Mike Fishbach | 3 | 1 | | | | | | | | | |
| | Mike Fishbach | 7 | 7 | | | | | | | | | | | | | | |
| | Mike Fishbach | 7 | 7 | | | | | | 7 | Ilie Năstase | w/o | | | | | | |
| | | | | | | | | | 2 | Björn Borg | | | | | | | |
| | Mark Cox | 1 | 4 | | | | | | | | | | 2 | Björn Borg | | | | | | | |
| | Antonio Zugarelli | 6 | 6 | | | | | | | | | | | | | | |
| | Antonio Zugarelli | 6 | 6 | | | Antonio Zugarelli | 1 | 2 | | | | | | | | | |
| | | | | | 2 | Björn Borg | 6 | 6 | | | | | | | | | |
| | Louk Sanders | 2 | 3 | | 2 | Björn Borg | 6 | 6 | | | | | | | | | |
| 2 | Björn Borg | 6 | 6 | | | | | | | | | | | | | | |